There is a noisy relief
valve in the hydraulic pump.
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| • | There is some noise in all power steering systems. |
| • | One of the most common is a hissing noise. The hissing sound is
most evident at standstill parking. A hiss is a high frequency noise. |
| • | The noise is present in every valve and results from the high
frenquency fluid passing over the valve orifice edges. There is not a relationship
between the hissing noise and the performance of the steering. A hiss may
be expected when the steering wheel is at the end of the travel or when slowly
turning at standstill. |
| • | Do not replace the valve the hiss is extremly objectional. A replacement
valve will also exhibit some slight noise and is not always a cure for the
objection. |
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